i found this by chance while browsing...might help some, but who knows.

Make : TOYOTA Model : TACOMA Year : 2007
Manufacturer : TOYOTA MOTOR NORTH AMERICA, INC.
NHTSA CAMPAIGN ID Number : 07V324000 Mfr's Report Date : JUL 24, 2007
Component: POWER TRAINRIVELINE
Potential Number Of Units Affected : 108
Summary:
ON CERTAIN PICKUP TRUCKS EQUIPPED WITH FOUR WHEEL DRIVE, A SECTION OF THE REAR PROPELLER SHAFT MAY HAVE BEEN IMPROPERLY CAST.
Consequence:
THE FRONT SIDE OF THE REAR PROPELLER SHAFT COULD SEPARATE AT THE JOINT AND COME INTO CONTACT WITH THE ROAD SURFACE WHICH COULD RESULT IN A LOSS OF VEHICLE CONTROL, INCREASING THE POSSIBILITY OF A CRASH.
Remedy:
DEALERS WILL REPLACE THE REAR PROPELLER SHAFT WITH A NEW ONE FREE OF CHARGE. THE RECALL IS EXPECTED TO BEGIN ON OR ABOUT AUGUST 9, 2007. OWNERS MAY CONTACT TOYOTA AT 1-800-331-4331.
Notes:
CUSTOMERS MAY ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION¿S VEHICLE SAFETY HOTLINE AT 1-888-327-4236 (TTY 1-800-424-9153), OR GO TO HTTP://WWW.SAFERCAR.GOV.